Extended Range of Stable Radial Position of Tokamak Plasma in TOKASTAR-2
In TOKASTAR-2, the tokamak plasma position was radially unstable in the outer region due to a large decay index (n-index) of the vertical field. To improve the radial position stability, the position of pulsed vertical field coils was moved toward the midplane. After the modification, improvement in...
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| Veröffentlicht in: | Plasma and Fusion Research 2018/09/25, Vol.13, pp.1402111-1402111 |
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| container_title | Plasma and Fusion Research |
| container_volume | 13 |
| creator | MURAOKA, Kenji FUJITA, Takaaki ARIMOTO, Hideki OKAMOTO, Atsushi ITOU, Hiromasa SUGIOKA, Ryoichi MINOURA, Masato YASUDA, Kouhei YOKOYAMA, Ryoma YAMAUCHI, Takahiro |
| description | In TOKASTAR-2, the tokamak plasma position was radially unstable in the outer region due to a large decay index (n-index) of the vertical field. To improve the radial position stability, the position of pulsed vertical field coils was moved toward the midplane. After the modification, improvement in the decay index profile and extension of the range of the stable radial plasma position toward the outer region were observed by the internal magnetic field measurement. The variation in the outermost position of the plasma center was about half of the radial shift of the decay index curve. |
| doi_str_mv | 10.1585/pfr.13.1402111 |
| format | Article |
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To improve the radial position stability, the position of pulsed vertical field coils was moved toward the midplane. After the modification, improvement in the decay index profile and extension of the range of the stable radial plasma position toward the outer region were observed by the internal magnetic field measurement. The variation in the outermost position of the plasma center was about half of the radial shift of the decay index curve.</description><identifier>ISSN: 1880-6821</identifier><identifier>EISSN: 1880-6821</identifier><identifier>DOI: 10.1585/pfr.13.1402111</identifier><language>eng</language><publisher>The Japan Society of Plasma Science and Nuclear Fusion Research</publisher><subject>decay index ; magnetic probe ; plasma position ; radial position stability ; TOKASTAR</subject><ispartof>Plasma and Fusion Research, 2018/09/25, Vol.13, pp.1402111-1402111</ispartof><rights>2018 by The Japan Society of Plasma Science and Nuclear Fusion Research</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c460t-f876388dfdaa0d53614c2f6483fb8ca1ffe5674af00800ccc97441ee1e374d8d3</citedby><cites>FETCH-LOGICAL-c460t-f876388dfdaa0d53614c2f6483fb8ca1ffe5674af00800ccc97441ee1e374d8d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1876,27903,27904</link.rule.ids></links><search><creatorcontrib>MURAOKA, Kenji</creatorcontrib><creatorcontrib>FUJITA, Takaaki</creatorcontrib><creatorcontrib>ARIMOTO, Hideki</creatorcontrib><creatorcontrib>OKAMOTO, Atsushi</creatorcontrib><creatorcontrib>ITOU, Hiromasa</creatorcontrib><creatorcontrib>SUGIOKA, Ryoichi</creatorcontrib><creatorcontrib>MINOURA, Masato</creatorcontrib><creatorcontrib>YASUDA, Kouhei</creatorcontrib><creatorcontrib>YOKOYAMA, Ryoma</creatorcontrib><creatorcontrib>YAMAUCHI, Takahiro</creatorcontrib><title>Extended Range of Stable Radial Position of Tokamak Plasma in TOKASTAR-2</title><title>Plasma and Fusion Research</title><addtitle>Plasma and Fusion Research</addtitle><description>In TOKASTAR-2, the tokamak plasma position was radially unstable in the outer region due to a large decay index (n-index) of the vertical field. To improve the radial position stability, the position of pulsed vertical field coils was moved toward the midplane. After the modification, improvement in the decay index profile and extension of the range of the stable radial plasma position toward the outer region were observed by the internal magnetic field measurement. The variation in the outermost position of the plasma center was about half of the radial shift of the decay index curve.</description><subject>decay index</subject><subject>magnetic probe</subject><subject>plasma position</subject><subject>radial position stability</subject><subject>TOKASTAR</subject><issn>1880-6821</issn><issn>1880-6821</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNpNkE1PwkAQhjdGExG9et4_0LrT3W6XY0NQjCQQqOfNsB9YKC3Z7UH_vRCQeJqZvO8zh4eQZ2Ap5Cp_OfiQAk9BsAwAbsgAlGKJVBnc_tvvyUOMW8bkKAc5INPJd-9a6yxdYrtxtPN01eO6ccfb1tjQRRfrvu7aU1J1O9zjji4ajHukdUur-Ue5qsplkj2SO49NdE-XOSSfr5NqPE1m87f3cTlLjJCsT7wqJFfKeovIbM4lCJN5KRT3a2UQvHe5LAR6xhRjxphRIQQ4B44XwirLhyQ9_zWhizE4rw-h3mP40cD0yYM-etDA9cXDESjPwDb2uHHXOoa-No37q7N_zDUzXxi0a_kvKQRmxA</recordid><startdate>20180925</startdate><enddate>20180925</enddate><creator>MURAOKA, Kenji</creator><creator>FUJITA, Takaaki</creator><creator>ARIMOTO, Hideki</creator><creator>OKAMOTO, Atsushi</creator><creator>ITOU, Hiromasa</creator><creator>SUGIOKA, Ryoichi</creator><creator>MINOURA, Masato</creator><creator>YASUDA, Kouhei</creator><creator>YOKOYAMA, Ryoma</creator><creator>YAMAUCHI, Takahiro</creator><general>The Japan Society of Plasma Science and Nuclear Fusion Research</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20180925</creationdate><title>Extended Range of Stable Radial Position of Tokamak Plasma in TOKASTAR-2</title><author>MURAOKA, Kenji ; FUJITA, Takaaki ; ARIMOTO, Hideki ; OKAMOTO, Atsushi ; ITOU, Hiromasa ; SUGIOKA, Ryoichi ; MINOURA, Masato ; YASUDA, Kouhei ; YOKOYAMA, Ryoma ; YAMAUCHI, Takahiro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c460t-f876388dfdaa0d53614c2f6483fb8ca1ffe5674af00800ccc97441ee1e374d8d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>decay index</topic><topic>magnetic probe</topic><topic>plasma position</topic><topic>radial position stability</topic><topic>TOKASTAR</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>MURAOKA, Kenji</creatorcontrib><creatorcontrib>FUJITA, Takaaki</creatorcontrib><creatorcontrib>ARIMOTO, Hideki</creatorcontrib><creatorcontrib>OKAMOTO, Atsushi</creatorcontrib><creatorcontrib>ITOU, Hiromasa</creatorcontrib><creatorcontrib>SUGIOKA, Ryoichi</creatorcontrib><creatorcontrib>MINOURA, Masato</creatorcontrib><creatorcontrib>YASUDA, Kouhei</creatorcontrib><creatorcontrib>YOKOYAMA, Ryoma</creatorcontrib><creatorcontrib>YAMAUCHI, Takahiro</creatorcontrib><collection>CrossRef</collection><jtitle>Plasma and Fusion Research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MURAOKA, Kenji</au><au>FUJITA, Takaaki</au><au>ARIMOTO, Hideki</au><au>OKAMOTO, Atsushi</au><au>ITOU, Hiromasa</au><au>SUGIOKA, Ryoichi</au><au>MINOURA, Masato</au><au>YASUDA, Kouhei</au><au>YOKOYAMA, Ryoma</au><au>YAMAUCHI, Takahiro</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Extended Range of Stable Radial Position of Tokamak Plasma in TOKASTAR-2</atitle><jtitle>Plasma and Fusion Research</jtitle><addtitle>Plasma and Fusion Research</addtitle><date>2018-09-25</date><risdate>2018</risdate><volume>13</volume><spage>1402111</spage><epage>1402111</epage><pages>1402111-1402111</pages><issn>1880-6821</issn><eissn>1880-6821</eissn><abstract>In TOKASTAR-2, the tokamak plasma position was radially unstable in the outer region due to a large decay index (n-index) of the vertical field. To improve the radial position stability, the position of pulsed vertical field coils was moved toward the midplane. After the modification, improvement in the decay index profile and extension of the range of the stable radial plasma position toward the outer region were observed by the internal magnetic field measurement. The variation in the outermost position of the plasma center was about half of the radial shift of the decay index curve.</abstract><pub>The Japan Society of Plasma Science and Nuclear Fusion Research</pub><doi>10.1585/pfr.13.1402111</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| source | J-STAGE Free; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | decay index magnetic probe plasma position radial position stability TOKASTAR |
| title | Extended Range of Stable Radial Position of Tokamak Plasma in TOKASTAR-2 |
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